class_docstr: Derive a specific sub-class of a VAE for a sentence model. 
code: def analyse(self, data, runPath, epoch):
      pass
  
imports: import os
  import json
  import numpy
  import torch
  import torch.distributions
  import torch.nn
  import torch.nn.functional
  import torch.utils.data
  from torch.utils.data import DataLoader
  from datasets import CUBSentences
  from utils import Constants, FakeCategorical
  from .vae import VAE
label_desc: Use image node_id 7 for calling the CUB_Sentence obj's underlying member method code with example usage: obj.analyse(data, runPath, epoch) without return types